Arsenal will 'achieve nothing' without improving defence, says Paul Merson SkySports Paul Merson believes Arsenal will "achieve nothing" with their current defence and he has had some choice words for the Gunners' backline.

Premier League grades: Liverpool delight, Arsenal ace, Manchester United fragile? SkySports Who proved how much difference a week can make? Who needs to invest in January? Find out in this week's Premier League grades

WATCH: Should Marcos Alonso have seen red for slap on Ainsley Maitland-Niles? SkySports Alonso was grappling with the Arsenal substitute at the back post following a left-wing Chelsea corner. As his attempted header drifted wide of the post the

Maurizio Sarri accuses Chelsea players of being difficult to motivate following defeat to Arsenal SkySports Chelsea produced a lacklustre performance at the Emirates Stadium as goals from Alexandre Lacazette and Laurent Koscielny cut the gap to fourth to three

Unai Emery has spent much of his Arsenal tenure searching for a winning formula. Did he find it in the 2-0 win over Chelsea? Nick Wright was at the Emirates Stadium to assess the changes which made the difference.

Paul Merson says Arsenal will 'achieve nothing' without improving defence SkySports Paul Merson believes Arsenal will "achieve nothing" with their current defence and he has had some choice words for the Gunners' backline.

Henrikh Mkhitaryan back in Arsenal training before Man Utd FA Cup clash SkySports The Armenian has been out of action since December 19 after fracturing a metatarsal in his right foot in their Carabao Cup defeat to Tottenham after colliding